Position detector

Abstract

A position detector as one electronic part is configured by clamping and holding a stacking body obtained by stacking a display comprising a resin frame and an LCD part and a position detecting sensor by a back bezel and a front bezel. By using an auxiliary member, an upper surface frame part of the front bezel is kept from covering a part, in a loop coil, that is disposed outside an effective display area and relates to detection of an indicated position at an end part of the effective display area.

The invention claimed is: 
     
       1. A position detector, comprising:
 a display device including:
 a display component having a flat display screen, and 
 a resin frame that fixes the display component; 
 
 a position detecting sensor comprising a plurality of loop coils arranged in each of a first direction and a second direction that intersect each other and disposed on a lower side of the display device in a stacking manner, wherein the position detecting sensor is configured to detect an indicated position in an effective display area on the display screen; 
 a lower holding member on the lower side of the display device and the position detecting sensor; 
 an upper holding member that is formed of a metal material and has an opening part that exposes the display screen, the upper holding member being on an upper side of the display device and the position detecting sensor; 
 an auxiliary member that is formed of a material that does not affect reception of a signal through the plurality of loop coils, wherein the auxiliary member covers a part of the display component and the resin frame and is configured to fix the display component and the resin frame; and 
 a frame part at a periphery of the opening part of the upper holding member that covers part of the resin frame, wherein the display device is fixed by the lower holding member and the upper holding member, 
 wherein an outermost loop coil of the plurality of loop coils includes a first part and a second part, wherein the first part has a first width and the second part has a second width, wherein the first width is less than the second width, wherein the frame part of the upper holding member covers the first part of the outermost loop coil. 
 
     
     
       2. The position detector according to  claim 1 , wherein the auxiliary member fixes the display component and the resin frame from a side of the display screen of the display device fixed by the lower holding member and the upper holding member. 
     
     
       3. The position detector according to  claim 1 , wherein the auxiliary member is disposed between the upper holding member and the resin frame, wherein the position detecting sensor is fixed, and wherein the display component and the resin frame are fixed by the lower holding member and the upper holding member. 
     
     
       4. The position detector according to  claim 1 , wherein a loop coil of the plurality of loop coils that is adjacent the outermost loop coil is not covered by the frame part of the upper holding member. 
     
     
       5. The position detector according to  claim 1 , wherein the auxiliary member is a vinyl tape layer. 
     
     
       6. The position detector according to  claim 1 , wherein the auxiliary member is a tape-shaped member that is coupled to an upper surface of the frame part of the upper holding member and a surface of the flat display screen. 
     
     
       7. The position detector according to  claim 1 , wherein the auxiliary member is a plate-shaped member that is coupled to a lower surface of the frame part of the upper holding member and a surface of the flat display screen. 
     
     
       8. The position detector according to  claim 1 , wherein the auxiliary member is a non-metallic component. 
     
     
       9. The position detector according to  claim 1 , wherein the auxiliary member is an insulative material. 
     
     
       10. The position detector according to  claim 1 , wherein the auxiliary member comprises an adhesive layer on a resin layer. 
     
     
       11. The position detector according to  claim 1 , wherein the first part of the outermost loop coil has conductors are arranged in two rows in a horizontal direction and the second part of the outermost loop coil has conductors arranged in single rows in the horizontal direction. 
     
     
       12. The position detector according to  claim 11 , wherein the first part of the outermost loop coil has three stages in a vertical direction.